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  1. #46
    Join Date
    Oct 2011
    Location
    Norwood-ish, Adelaide
    Age
    59
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    6,540

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    Quote Originally Posted by simonl View Post
    If someone showed me that weld and asked what is wrong, the first thing I would say is that all that spatter suggests the current is too high. I have heard stories about people doing battery welding and using a bit of fencing wire to add some resistance to the circuit. Did you have anything like that or were you just using jumper leads direct on the battery?

    Michael

  2. #47
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

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    Hi Michael,

    I used jumper leads direct to the battery. I must say it felt the opposite. It was very hard to start an arc and even harder to maintain. It gave me the impression of a lack of current.

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  3. #48
    Join Date
    Aug 2010
    Location
    Near Bendigo, Victoria, AUS
    Age
    72
    Posts
    3,102

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    Simon, were the electrodes you used 6013? Many other electrodes need higher open circuit voltage than 24 or 26V....
    Its the voltage that starts the arc. Voltages as low as 16 or 17 will then maintain the arc. If the current was actually too low (I doubt it, like Michael), then the batteries are no good. You should easily get the 60-90A you need for 2.5mm sticks.
    Try 3.2mm electrodes and see how it looks with good batteries.
    I've tried it a few years ago and it felt no different than a DC welder....

    Sent from my GOME 2017M27A using Tapatalk
    Cheers, Joe
    retired - less energy, more time to contemplate projects and more shed time....

  4. #49
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,779

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    Hi Joe,

    Yes, I used 6013 electrodes, which are my general purpose electrodes I used for "everyday"

    The batteries are good. One was my starting battery, in really good nick and the other is my second or auxillary battery. Both in the car and always kept charged with a dual battery management system.

    I honestly think it's the leads. I will have another play but right now I got bigger fish to fry. The injectors in my car need replacing. After 320,000Km I guess I got my moneys worth.

    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  5. #50
    Join Date
    Aug 2009
    Location
    Sydney, NSW, Australia
    Posts
    1,836

    Default

    Some smart cookie will catch on soon and invent a lithium polymer battery pack that u can weld from may have 10mins to 20mins welding time but can u imagine the portability and the amount of sticky situations it would get 4x4wd drivers out of? the radio control battery's hold really good capacity too so its only a matter of time before someone brings something like this to the market

  6. #51
    Join Date
    Aug 2008
    Location
    near Rockhampton
    Posts
    6,216

    Default

    They already have.
    Gold, the colour of choice for the discerning person.

  7. #52
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    1,225

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    Quote Originally Posted by gazza2009au View Post
    Some smart cookie will catch on soon and invent a lithium polymer battery pack that u can weld from may have 10mins to 20mins welding time but can u imagine the portability and the amount of sticky situations it would get 4x4wd drivers out of? the radio control battery's hold really good capacity too so its only a matter of time before someone brings something like this to the market
    Fronius does one. You can weld about 6 rods on a charge.
    https://www.fronius.com/en/welding-t...mma/accupocket

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